This article summarizes the results of investigations dynamics ferroelectric (FE) phase transitions (PTs) obtained in Prague during last 25 years. After a short introduction, explaining differences between displacive and order-disorder types FE PTs, broadband dielectric, THz, mainly IR spectroscopic hydrogen-bonded FEs, BaTiO3, relaxor strained incipient various multiferroics are reviewed. The ...

The paper presents the results of a study phase composition and main static magnetic characteristics: saturation magnetization, residual magnetization coercive force polycrystalline ferroxplana type hexaferrites Ba2Ni2-xCuxFe12O22 (0 ≤ x 2.0) system. These materials have high permeability are promising for use as substrates antennas radar absorbing materials. It is shown that thermograms initia...